CVE-2026-39882

MEDIUM

5.3

Description

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to 1.43.0, the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can mitm the exporter connection). This vulnerability is fixed in 1.43.0.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorADJACENT_NETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published4/8/2026

Last Modified4/9/2026

Sourcenvd

Honeypot Sightings0

Affected Products

opentelemetry:opentelemetry

Weaknesses (CWE)

CWE-789

References

https://github.com/open-telemetry/opentelemetry-go/pull/8108(security-advisories@github.com)

https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.